Steam-stove



J. L. HARLEY.

Steam-Stove.

No. 226,313. Patented April 6, 1880.

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Q. WITNESSES INVENTO-R ATTORNEY MPHERS. PHOTO-LITHOGRAPHER, WASHINGTON, D C

NITE STATES JFFECE ATENT STEAM- SPECIFIGATION forming part of Letters STOVE.

Patent No. 226,313, dated April 6, 1880.

Application filed January 17, 1880.

To all whom it may concern:

Be it known that I, J. L. HARLEY, of the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in SteamStoves; and I do hereby (leclare that the following is afull and exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

My invention relates to certain novel features of construction in steam-stoves for use by plate-printers in connection with an improved system of steam-circulation, made the subject of another application for Letters Patent filed simultaneously with this.

The objects of my invention are to adapt the stoves to that system of steam-circulation, and to render them capable of expansion and contraction in size, to adapt them to use for printers plates of different sizes; and with these objects in view my invention consists of the peculiar construction and arrangement hereinafter explained in detail.

Prior to my invention the plates used by plate-printers have been warmed over stoves heated bygas or lamp jets, and the radiated heat from the sides of the stoves and the unavoidable injurious inhalations from the gas have been serious difficulties attending their use; and, in addition to the above-mentioned disadvantages resulting from the stove as at present constructed and used, another serious disadvantage exists in the non-adaptability of such stoves to plates of large size, it being necessary to have separate stoves for every size of plate used.

My present invention overcomes all these disadvantages, as will appear from the following description, in which reference is made to the accompanying drawings, forming part of this specification, and in which- Figure 1 is a longitudinal vertical section of a stove embodying my invention; Fig. 2, a similar view of the stove shown at Fig. 1, extended laterally to increase the .horizontal heating-surface; and Fig. 3 is a plan or top view of the laterally-extended stove, the sectional portion being intended to show the manner of securing the non-conducting material to prevent radiation and to protect the printer.

Similar letters indicate like parts in the several figures.

A is a table or platform, supported upon suitable legs B, upon which is mounted the stoveon legs 0, which, being threaded and provided with two sets of nuts, a, permit vertical adjustment of the stove in an obvious manner.

The stove consists of a box which is rectangular in horizontal section, tapering inwardly toward the bottom, and forming a steamchamber, D. The sides are extended slightly below the bottom, forming a space under said bottom, which is filled with any suitable nonconductor of heat, which is preferably put in in a plastic state, and held firmly when hard by the tapered sides and metal binding-strips b. The bottom of the chamber D is formed with a steam-inlet tube, E, extending slightly above the bottom, and an exit-tube, F, at the opposite end, flush with the bottom and tapered, the tubes E and F being adapted for connection with steam-pipes G H, so that steam may pass through G E and out by F H.

The stove is closed by a cover, I, which should be practically steam-tight. K is intended to illustrate supports, if necessary, to sustain the cover.

The bottom of the stove is extended laterally, as shown at L, forming a support for strips of non-conducting material, M, which fit close at the corners, and which are held in position by a removable hoop or band, N.

-O is a metallic band or shield to protect the printer from the heat radiated from the steampipes when the stove is used in its normal size; but when the stove is enlarged or heightened, as shown at Fig. 2, telescopic shielding-tubes P are used.

At Fig. 2 I have shown precisely the same construction shown at Fig. l, with the exception that the band N and non-conducting strips M have been removed and a surrounding extension, Q, has been placed around the stove to increase its heating-surface, so that it may be used to warm larger printers plates. This surrounding extension is of the form shown in section at Fig. 2, the upper and lower plates resting, respectively, on the top edge of the stove and the lateral extension L.

The extension Q is supported adjustably upon legs R, similar in construction to the legs 0. Sis non-conductin g material arranged on the inside of the extension-box Q, and beveled or inclined, as shown,so that the radiated heat from the inner stove may reach the outside edges of the top plate of said extension. T is also non-conducting material, held in position by a corrugated strip, cl, and U is also non-conducting material, held in placein a dovetail channel cast on the extension, the object of all of which is to thoroughly protect the printer or other operative from radiated heat.

I t will be readily understood that to reduce the stove to its normal size :it is only necessary to remove the extension Q and replace the noncouductor strips M and hoop or band N.

The extension Q can be placed underneath the table A and very quickly applied when it becomes necessary to enlarge the top heatingsurface of the stove.

It will be readily understood from the construction described and shown that all the heat produced by a circulation of steam within the chamber D of the stove is applied directly to the top of the stove, and that the printer or other attendant is thoroughly protected from radiated heat and freed from any injurious or unhealthy inhalations.

What I claim as new, and desire to secure by Letters Patent, is

1. The stove proper provided with removable non-conducting strips, as described, a top heating-plate, and an interior steam space or chamber provided with inlet and outlet passages, substantially as-hereinbefore set forth.

2. The stove formed with lateral extension L, and the sides projected below the bottom and filled with a non-conducting material, as and for the purpose set forth.

3. In combination with the stove proper, constructed as described, the extension Q, adapted to surround the same and increase. the heating-surface, as and for the purposes hereinbefore set forth.

4. The extension Q, provided with the nonconductor S, beveled, as described, so as to permit the heating of top plate and prevent radiation laterally, as hereinbefore set forth.

5. The extension Q, provided with the nonconducting material S, T, and U, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand and seal this 8th day of January, A. D. 1880.

'JOS. L. HARLEY. [L. s.]

In presence of J N0. A. HAYWARD, WM. 0. MOINTIRE. 

